132 Scientific Intelligence. 
sity of a peculiar decomposition to the production of this pe 
stance; a decomposition requiring conditions which not only ar 
tablic 
differences in alee hay between this an Oe animal life of the 
— being drawn respecting the ant oae of their Se enarey 
granted that all rteuns contain those principles.” Moreotel er 
the denser portion of neither has yet been studied ; and this, which 
in Pennsylvania gti vs toate to 30 per r cent, rises in other 
o 70 ee The the 
possible ; oo the geologic association of petroleum with anima 
remains, the Lias of England, the Silurian of Canada, and 
the Misoena 6 California, strengthens t e argument derived from 
the highly nitrogenous character of the petroleum itself. at the 
phosphorus and sulphur of animal bind is not fo — in the 
hydrocarbons, is to be attributed to their easy oxydation and re- 
moval by water; though in pebiasia dois salsa and sulphuretted 
hydrogen are of frequent occurrence 
In view of the Pyare facts, viz: (1) that petroleum is the 
primary product of the d composition of organic matter, a and (2) 
ha” 
“those extremely volatile and slightly colored mineral oils w 
are occasionally met with in different localities, and which are eyi- 
dently the bai of a distillation carried on by natural pro- 
cesses.” allied to Ace and is fp tho len ity 
- 
emai nes Eas 
